Eleanor Gray QC, for Ashworth Hospital, has described one event on the ward which, she suggests, shows evidence of Ian Brady's mental state.
Brady complained to medical staff about the behaviour of a fellow-patient while he was making a phone call. He claimed the other patient had been repeatedly slamming a locker door and making animal noises while he was attempting to use the phone.
When asked what kind of animal noises, Brady replied "pig noises".
The psychiatrist noted that at the time of the alleged incident, the other patient had been sitting quietly and reading a magazine.
Ms Gray asked Dr Grounds whether Brady was being untruthful "or frankly deluded? Was this a possible hallucination?"
Dr Grounds replied: "Maybe. It's a paranoid response".
Ms Eleanor Gray QC for Ashworth Hospital is questioning Dr Grounds on the reasons for Ian Brady's isolation at the hospital - she has suggested he is alone much of the time "because he is afraid of other [patients]".
Dr Grounds argues that Brady's behaviour resulted from contempt for other people; indifference; a lack of interest in others; and a sense of superiority.
"He is not a man who is fearful of others. Far from it," he said.
But Ms Gray referred to Brady's refusal to leave his room, and a reason he gave for this; a fear of his fellow-patients. Brady is recorded as saying: "...in these penal s***holes, any sign of weakness and they will jump you".
She says in addition Brady's general behaviour towards staff shows signs of paranoia and suspicion. "This is a grossly abnormal man who has been crippled by the disorders which he suffers".
Ian Brady has occasionally been visible on the video link to Manchester, busily writing notes and occasionally asking questions of his solicitor.
He appears to be taking a keen interest in proceedings, and seems very energetic and focussed for a man who has reportedly not taken solid food since 1999.
Dr Grounds conceded that Brady was aloof, disinterested in others and formed no close relationships. But he claims he has "not seen the typical deterioration seen in schizophrenia".
He also concedes the possibility Brady was lying when he claimed he had been "simulating" the symptoms of mental illness.
There has also been debate as to whether or not Brady's shouting at the televison should be regarded as "abnormal behaviour".
The second day of Ian Brady's medical tribunal has begun at Ashworth Hospital in Liverpool with the Moors murderer's medical witness, Dr Adrian Grounds, being cross-examined.
Ms Eleanor Gray QC has queried Dr Grounds' assessment that, while Brady was suffering from a paranoid psychotic illness with schizophrenic symptoms in the mid-1980s, he is no longer mentally ill.
The lawyer drew attention to reports of Brady's behaviour at the hospital as recently as January this year: sleeping in his clothes, leaving his room untidy and habitually disorganised; the fact that he completely isolates himself during the day and spends many of the daylight hours sleeping.
She read from reports which drew a picture of a patient withdrawn from others.
Brady wakes very early in the morning, goes downstairs and makes a cup of coffee, then returns to his room and avoids communal areas for the rest of the day.
A mental health tribunal to decide whether Moors murderer Ian Brady can be transferred to prison from a maximum security hospital will resume today.
The 75-year-old is bidding to go to prison so he is "free to end his life", the tribunal heard on Monday.
Ian Brady's mental health tribunal is drawing to a close. It will resume at 10am tomorrow morning.
Dr Adrian Grounds, Ian Brady's medical witness, said there had been "periodic conflicts with other patients".
The hospital's QC refers to the removal of "his weapon - his pen".
The hospital QC outlines some of Ian Brady's beliefs about the Ashworth Hospital.
In a 2008 interview, Brady said another patient had been moved to a next door room deliberately. He complained about noise at night from patients and staff.
He also claimed his phone calls were tapped and staff listened to his conversations on the ward.